\begin{table}
\centering
\begin{tabular}[t]{lccc}
\toprule
  & Model 1 & Model 2 & Model 3\\
\midrule
Gender DG & \num{0.163}*** & \num{0.151}* & \num{0.395}**\\
 & (\num{0.039}) & (\num{0.038}) & (\num{0.079})\\
IG Type & No & Yes & Yes\\
IG Country & No & Yes & Yes\\
Policy Area & No & No & Yes\\
IG Covs & No & Yes & Yes\\
Number of Observations & 74486 & 66778 & 66778\\
\bottomrule
\multicolumn{4}{l}{\rule{0pt}{1em}+ p $<$ 0.1, * p $<$ 0.05, ** p $<$ 0.01, *** p $<$ 0.001}\\
\multicolumn{4}{l}{\rule{0pt}{1em}Significance levels: *** p $<$ 0.01, ** p $<$ 0.05, * p $<$ 0.1}\\
\end{tabular}
\end{table}
